Bicyclic aromatic derivatives, method for preparing them, and their use in human and veterinary medicine and in cosmetics
US4833240A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1987 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Jul 17, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C65/17
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Bicyclic aromatic compounds, having the following formula: ##STR1## in which: n=0 or 1; PA0 R' represents H, OH, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 acyloxy; PA0 R" represents H or C.sub.1 -C.sub.4 alkoxy; PA0 or R' and R" taken together form an oxo (.dbd.O), methano (.dbd.CH.sub.2) or hydroximino (.dbd.N--OH) radical; PA0 R represents --CH.sub.2 OH or --COR.sub.7 ; PA0 R.sub.7 represents H, OR.sub.8, or ##STR2## R.sub.8 represents H, C.sub.1 -C.sub.4 alkyl, monohydroxyalkyl, polyhydroxyalkyl, aryl or aralkyl, optionally substituted, a sugar residue or ##STR3## where p is 1, 2 or 3 and r' and r" represent H, lower alkyl, monohydroxyalkyl, optionally interrupted by a heteroatom, polyhydroxyalkyl, optionally substituted aryl or benzyl, an amino acid residue or an aminated sugar residue or taken together with the nitrogen atom to which they are attached form a heterocycle; PA0 A represents methylene or dimethylene, substituted or not with lower alkyl, PA0 R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent H or lower alkyl, PA0 R.sub.1 and R.sub.3 taken together are capable of forming a methylene or dimethylene radical, when A represents dimethylene; PA0 R.sub.5 and R.sub.6 repres…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.